Concept explainers
The area of a rectangular book cover is
The width of the book cover is
What is the length of the book cover?
To find : the length of the bookcover.
Answer to Problem 18P
Explanation of Solution
Given information: The area of a rectangular book cover is
Calculation:
We will factorize the polynomial for the area of the rectangular book cover by splitting the midle term into two terms whose sum is
Therefore, by splitting the middle term , we get
We know that area of a rectangle is product of its length and width.
Therefore, length of the book cover is the ratio of its area to its width.
length
Thus, length of the book cover is
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